Please try the last catalyst driver, it seems to works better for me.
http://www2.ati.com/drivers/linux/ati-driver-installer-11-6-x86.x86_64.run
Please try the last catalyst driver, it seems to works better for me.
http:// www2.ati. com/drivers/ linux/ati- driver- installer- 11-6-x86. x86_64. run